That was actually a position that he rotated a bit. Zeilinski would play in that role, same with Marco Rog.
In matches agsint Utd, Spurs, City, etc, I think Kante is an automatic starter. When we have to break down teams like West Ham, etc, I think he can be rotated for a more attacking player like Barkley or RLC.
Now, I understand that this makes Kante a very over qualified rotation option and getting 100M odd is good business (Damn, why does he have to be so likeable?).